---
title: "Litter Robot 4 Carbon Filters — $378K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/litter-robot-4-carbon-filters"
last_updated: "2026-07-21T22:01:56.606Z"
locale: en
meta:
description: "Niche score 49/100 · $378K/yr market · 104K searches/yr · $17.51 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $378K/yr market · 104K searches/yr · $17.51 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Litter Robot 4 Carbon Filters — $378K/yr Amazon US Niche (2026) - Flapen"
---
# **litter robot 4 carbon filters**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 54Growth 45Conversion 100Competition 0Returns 98Price range 75Avg price 81Brand share 0Review moat 81Quality gap 20
**Conversion**
**Incredible****20.7%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.5%**
return rate — above 6% kills the launch gate
**Review moat**
**Great****376.25**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$17.51**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.01–$29.87**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$378K**
$378K/yr · 104K searches
**Growth**
**Okay****+15.9%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, litter robot 4 carbon filters is a $378K/yr Amazon United States market (104K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 49/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **litter robot 4 carbon filters market data**
- **Units sold / yr**
- **20K–25K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$350K–$438K**
- units × avg price
- **Launch success**
- **—**
- 0 of 0 new (360d)
- **Conversion rate**
- **20.7%**
- **Avg BSR**
- **#3**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **1.1%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **208 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**6**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- Lubise53% - QUEARN22% - caqeaus14% - Whisker12%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +15.9% search growth over the last 90 days.
3K2KPrime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/litter-robot-4-carbon-filters/trend)
## **Top litter robot 4 carbon filters search terms**
- **litter robot 4 carbon filters**33K/yr+26.8%20.9% conv. - **litter robot 4 filter**19K/yr+8.9%21.7% conv. - **litter robot filter**18K/yr+8.5%17.5% conv. - **litter robot carbon filters**11K/yr+6.2%15.0% conv. - **litter robot 5 carbon filters**3K/yr+52.1%7.1% conv. - **litter robot filter 4**5K/yr+27.4%26.8% conv. - **litter robot 4 filter replacement**4K/yr-2.9%26.2% conv. - **litter robot filters**4K/yr+10.7%16.5% conv. - **litter robot 4 filters**4K/yr+1.5%20.2% conv. - **whisker litter robot 4 carbon filters**2K/yr+53.4%21.3% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/litter-robot-4-carbon-filters/search-terms)
## **Top litter robot 4 carbon filters products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$57K30%$113K45%$170K60%$227K1001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 4 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**8Pcs Carbon Filters Compatible with LR 4 Replacement Activated Charcoal Filters for Litter Box Carbon Premium Filter Thickened and Durable Eliminate Odor and Controls Moisture on Pets Body**Lubise**$10.01**4.6★232 rev](https://www.amazon.com/dp/B0CKXMDBN8) [2**QUEARN 8 Pack 0.5 Thickened Activated Carbon Filters Compatible with LR 4 Connect Automatic Cat Litter Box Filters Replacement Charcoal Filter Sheet to Absorb Odors Control Pet Damp Keep Home Fresh**QUEARN**$13.69**4.6★776 rev](https://www.amazon.com/dp/B0C4F3FQN1) [3**8 Pack Carbon Filters Compatible with Litter Robot 4 Activated Charcoal Cat Litter Box Filters Replacement to Absorb Odors Litter Box Deodorizer Controls Moisture and Keep Home Fresh**caqeaus**$16.48**4.8★126 rev](https://www.amazon.com/dp/B0D3M21S1N) [4**Litter-Robot 4 Carbon Filters by Whisker 6 Pack Custom Fit Carbon Filter Pads for Litter-Robot 4 Absorbs and Reduces Litter Box Odors for Cleaner Smelling Home**Whisker**$29.87**4.7★371 rev](https://www.amazon.com/dp/B0BMNB1C7K)
### **Newest**
by launch date
[**8 Pack Carbon Filters Compatible with Litter Robot 4 Activated Charcoal Cat Litter Box Filters Replacement to Absorb Odors Litter Box Deodorizer Controls Moisture and Keep Home Fresh**caqeaus**$16.48**126 rev2y ago](https://www.amazon.com/dp/B0D3M21S1N) [**8Pcs Carbon Filters Compatible with LR 4 Replacement Activated Charcoal Filters for Litter Box Carbon Premium Filter Thickened and Durable Eliminate Odor and Controls Moisture on Pets Body**Lubise**$10.01**232 rev2y ago](https://www.amazon.com/dp/B0CKXMDBN8) [**QUEARN 8 Pack 0.5 Thickened Activated Carbon Filters Compatible with LR 4 Connect Automatic Cat Litter Box Filters Replacement Charcoal Filter Sheet to Absorb Odors Control Pet Damp Keep Home Fresh**QUEARN**$13.69**776 rev3y ago](https://www.amazon.com/dp/B0C4F3FQN1) [**Litter-Robot 4 Carbon Filters by Whisker 6 Pack Custom Fit Carbon Filter Pads for Litter-Robot 4 Absorbs and Reduces Litter Box Odors for Cleaner Smelling Home**Whisker**$29.87**371 rev3y ago](https://www.amazon.com/dp/B0BMNB1C7K)
### **Trending**
90-day click momentum
[**8 Pack Carbon Filters Compatible with Litter Robot 4 Activated Charcoal Cat Litter Box Filters Replacement to Absorb Odors Litter Box Deodorizer Controls Moisture and Keep Home Fresh**caqeaus**$16.48**4.8★**▲ 43%**](https://www.amazon.com/dp/B0D3M21S1N) [**8Pcs Carbon Filters Compatible with LR 4 Replacement Activated Charcoal Filters for Litter Box Carbon Premium Filter Thickened and Durable Eliminate Odor and Controls Moisture on Pets Body**Lubise**$10.01**4.6★**▲ 42%**](https://www.amazon.com/dp/B0CKXMDBN8) [**Litter-Robot 4 Carbon Filters by Whisker 6 Pack Custom Fit Carbon Filter Pads for Litter-Robot 4 Absorbs and Reduces Litter Box Odors for Cleaner Smelling Home**Whisker**$29.87**4.7★**— 4%**](https://www.amazon.com/dp/B0BMNB1C7K) [**QUEARN 8 Pack 0.5 Thickened Activated Carbon Filters Compatible with LR 4 Connect Automatic Cat Litter Box Filters Replacement Charcoal Filter Sheet to Absorb Odors Control Pet Damp Keep Home Fresh**QUEARN**$13.69**4.6★**▼ 47%**](https://www.amazon.com/dp/B0C4F3FQN1)
## **What buyers say about litter robot 4 carbon filters**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**33%
*“Fits perfectly”*
**Value For Money**11%
*“Having an 8-pack provides excellent value”*
**Compatibility-Overall**11%
*“Whiskers compatible carbon filter”*
**Smell**9%
*“They keep the room smelling better”*
**Filtration**8%
*“Good filter”*
**Advertised Vs Actual Product**7%
*“Worked as advertises”*
**Thickness**7%
*“These are way thicker than the original litter robot ones and worked great”*
**Quality-Overall**3%
*“Great product”*
**Ease Of Use**2%
*“Easy to use”*
**Material Quality**1%
*“slightly more solid”*
### **What buyers complain about **
**Size-Overall**25%
*“This doesnt fit our Litter Robot 4”*
**Thickness**19%
*“is the same shape it is almost too thin”*
**Smell**8%
*“It doesnt trap the bad scent”*
**Functionality-Overall**5%
*“Doesn't work”*
**Value For Money**5%
*“Overpriced”*
**Compatibility-Overall**3%
*“This doesnt fit our Litter Robot 4”*
**Quality-Overall**2%
*“The quality isnt exactly the same as original filters”*
**Natural Resource Wastage**2%
*“Waste of money”*
**Weight Heavy**2%
*“They are too bulky”*
**Filtration**2%
*“cause the filter cover to stick out”*
### **Top return reasons **
**Size-Overall**40%
**Compatibility-Overall**17%
**Filtration**9%
**Smell**8%
**Functionality-Overall**7%
**Advertised Vs Actual Product**5%
**Value For Money**5%
**Thickness**4%
**Thin**2%
**Assembly/Installation**2%
## **Common questions**
- **Is litter robot 4 carbon filters profitable to sell on Amazon United States?**
- The niche generates $378K/yr across 4 tracked products. 90-day search growth is +15.9%. Flapen's verdict: Skip it (49/100).
- **How competitive is the litter robot 4 carbon filters niche?**
- 4 brands and 6 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in litter robot 4 carbon filters?**
- Top complaints mined from reviews: Size-Overall, Thickness, Smell. The return rate is 0.5%.
- **When does demand for litter robot 4 carbon filters peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the litter robot 4 carbon filters niche?**
- Listings span $10.01–$29.87; the average listing price is $17.51 (sweet spot $15–$100). The average incumbent carries 376 reviews — the moat a new listing must climb.
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